ELASTOPHENE HR FR GR is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with high performance glass scrim. ELASTOPHENE HR FR GR (high resistance, fire retardant, granulated) is a SBS Modified bitumen cap ply for use in approved multi-ply membrane and flashing assemblies. The topside is surfaced with ceramic coated granules and the underside is surfaced with fine mineral aggregate to facilitate cold adhesive and hot asphalt applications.